monitor display

Discussion in 'Computing and Networks' started by recca02, Jun 21, 2007.

  1. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
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    i m facing a unique problem, ne advice will be helpful.
    for some reasons my monitor(crt not tft) does not show green colour only blue and red and thier combinations. green colours appear as black.
    this is the second time it has happened in two days at almost the same time.
    last time it went on that way for few hrs then automatically it corrected after say 5 hours.
    any ideas why?
     
  2. niftydog

    Active Member

    Jun 13, 2007
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    0
    It's on the way out by the sounds of it. There could be a number of reasons why, but the only one really worth checking is to make sure the cables are securely plugged in. Beyond that it's probably not worth the effort given the prices of new LCD monitors these days.
     
  3. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    There is probably a small pcb on the back of the CRT. The pairs of transistors (this was the way it was done some years ago) control the modulating voltage to the three guns. Losing green sounds like either a poor solder joint or one of the transistors opening up with heat. Try wiggling the cable to the computer to eliminate that possibility - I've seen more bad cables than failures inside the monitors.
     
  4. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
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    thanks ,
    guess what the green colour is back!--i knew it wud.
    it happened at the same time before.
    in last two days and two failures

    it goes off at abt 11:00 pm IST
    and comes back at abt 5 am IST
    any ideas!
    is it possible that it senses light presence /absence .
    its a 4 (read only here if you got older one) years old samsung 753 s
    i dont think they put such a technology in it.

    the problem is more funny than it is annoying.
    there is also a possibility that i m having green-night blindness.:)
     
  5. beenthere

    Retired Moderator

    Apr 20, 2004
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    1. Only use the monitor between 5 AM and 11 PM.

    2. Are the lights in the theater going down, or am I going blind?
     
  6. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
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    :D
    know what it happened again now at 11 am and is yet to correct.
    maybe time to get a new one :(
    so its not night blindness now.
    there is possibly something wrong with the green gun circuitry.

    green is answer to global warming.
    if i dont get green display my temperature wud rise thus the temperature of earth wud also rise by abt .00001 degree depending on temp and heat trannsfer coeff:)
     
  7. n9352527

    AAC Fanatic!

    Oct 14, 2005
    1,198
    4
    Wiggle the VGA cable like beenthere suggested, especially near the VGA connector and back of the monitor. You can wiggle it hard and pull or push a little. Also check that there is no bendy pins in the VGA connector. Most colour missing problems are associated with bad cables and connectors.

    If all else failed, then it is time to find that bad joints. If you are planning to scrap the monitor anyway, then as a last resort you could scientifically apply a little bit of gentle persuasion by slapping the back casing hard a few times :D
     
  8. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
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    i change the cable connection from grafix card to the motherboard that didnt help either , scrapping the monitor is the last thing i want , may i will have someone take a look and if that doesnt help then slapping the back casing hard
    is always a good option :D
     
  9. mentaaal

    Senior Member

    Oct 17, 2005
    451
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    My friend has been having the same problem only his happens when he brings his computer over to play games all night :D

    his problem was a bent pin. as all the others have said already i would say its a pin or cable.
     
  10. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
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    thanks mr mentaaal,
    i looked for the bent pin and did whatever i cud ,
    i asked someone who deals with these and he confidently replied it probably is a cable or connector fault. i havent sent it for repairs yet wud be sending after a couple of days ,till then i will forget that there are three primary colours and i m not playing any games these days so no problem there :D

    one thing i noticed even the white colur now looks sort of violet ,i never gave it a thought that even white wud be made o three colurs :p
     
  11. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
    0
    what do u know,
    i took all ur advice and ...............thanks everybody :)
    at least i now know where the problem is and my crt is good (those are quite sturdy arent they)
    thanks MR:
    beenthere
    n9352527
    mentaal;
    u ppl are gr8 problem solvers.
    i tried wiggling the cable before but at the cpu end shud have done that at the monitor end as stated,also a few slapping + venting some air & anger into the monitor casing might have done the trick (though i think its the cable)
    thanks again.
     
  12. bijukumbidi

    New Member

    Jan 5, 2008
    2
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    can u specify the make of panel
     
  13. bijukumbidi

    New Member

    Jan 5, 2008
    2
    0
    can u specify the make of panel
     
  14. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
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    by that wud u mean the make?
    its samsung syncmaster 753s.
    anyways the problem was due to the cable. its alright now...( i have fixed it well suing some primitive method ;))
     
  15. lg00111

    New Member

    Apr 22, 2008
    7
    0
    Did you tried to demagnetize the monitor through push button on your monitor or you can also do this through your graphic software.
     
  16. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
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    Yes degaussing is the first thing that I did.

    Its now clear to me that its the data cable's(or pins) fault when a colour disappears from a CRT monitor, I have seen this now in my college multiple times already. I always wiggle the cable a bit and voila!! all of a sudden I'm a genius. :D
     
  17. lg00111

    New Member

    Apr 22, 2008
    7
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    off course you r genius.
     
  18. kinkyknob

    New Member

    Apr 25, 2008
    5
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    I think you should buy a new one lol
     
  19. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    Just for the record, monitor cables always fail at the monitor end.
     
  20. recca02

    Thread Starter Senior Member

    Apr 2, 2007
    1,211
    0
    Now He tells us. :D
    That would have sure saved me some agony a year ago.
    Got to remember this when fixing this problem on college projectors.
    that however is one good pece of info, thanks Mr Beenthere.

    You really do not know much about me then, :p thanks.

    Incidentally my monitor is perhaps the only thing that will remain when I go for an upgrade. :D
     
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